Questions on Algebra: Quadratic Equation answered by real tutors!

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> Questions on Algebra: Quadratic Equation answered by real tutors!      Log On


   



Tutors Answer Your Questions about Quadratic Equations (FREE)


Question 1105365: Can you please help with this question: Two consecutive whole numbers (x and x+1) when the product of these numbers are subtracted from 47 times the first number (x), the answer is 360. what is x?
i have tried using the quadratic equation. I cannot get the answer to a whole number. my equation used to insert in the quadratic was: x(x+1)-47x-360=0.
can you please help and include all your workings so i can learn for next time. Thank you.

Click here to see answer by Alan3354(69443) About Me 

Question 1105367:
The graph of the equation $y =ax^2 + bx + c$, where $a$, $b$, and $c$ are constants, is a parabola with axis of symmetry $x = -3.$ Find $\frac{b}{a}$.

Click here to see answer by jim_thompson5910(35256) About Me 

Question 1105478: determine the value of p and q for which (–4,–3) will be solution of the system {px+qy=–26 {qx–py =7
Click here to see answer by ikleyn(52777) About Me 

Question 1105560: x2 +4x +2 by completing square method
Click here to see answer by Alan3354(69443) About Me 

Question 1105549: -2=-4.76x^2-0.31x+0.01
Solve for x.

Click here to see answer by Alan3354(69443) About Me 

Question 1105572: https://drive.google.com/file/d/0BwuVQnk5Ue0-WlJNYzBMbUhHQUlPQVg2Nm9tU1g4aFFHbE9F/view
Click here to see answer by ikleyn(52777) About Me 

Question 1105575: https://drive.google.com/file/d/0BwuVQnk5Ue0-WlJNYzBMbUhHQUlPQVg2Nm9tU1g4aFFHbE9F/view''
Please open this link for question and table. Thanks :)

Click here to see answer by Alan3354(69443) About Me 
Question 1105575: https://drive.google.com/file/d/0BwuVQnk5Ue0-WlJNYzBMbUhHQUlPQVg2Nm9tU1g4aFFHbE9F/view''
Please open this link for question and table. Thanks :)

Click here to see answer by josgarithmetic(39617) About Me 

Question 1105841: Please help me find the product of the roots of x^2 + 3x - 9 = 0 I forgot some of the steps and it will help me solve the rest of the problems I have for hw

Thanks

Click here to see answer by josgarithmetic(39617) About Me 

Question 1105865: 28x²—57x+14=?
Click here to see answer by Alan3354(69443) About Me 

Question 1105936: Hi, I need help on this question:
Find two positive numbers whose difference is 6 and the sum of whose squares is 900.
Thank you

Click here to see answer by ikleyn(52777) About Me 

Question 1106016: A quadratic function has zeros x=2/3 and x=-5. What two possible equations can solve this function?
Click here to see answer by stanbon(75887) About Me 

Question 1106017: Hi... may I have help with this question? I don't know how to write it into an equation.
"A positive integer number increased by its square is equal to 81 times the next higher positive integer number. Find the number."
Thank you.

Click here to see answer by josgarithmetic(39617) About Me 
Question 1106017: Hi... may I have help with this question? I don't know how to write it into an equation.
"A positive integer number increased by its square is equal to 81 times the next higher positive integer number. Find the number."
Thank you.

Click here to see answer by stanbon(75887) About Me 
Question 1106017: Hi... may I have help with this question? I don't know how to write it into an equation.
"A positive integer number increased by its square is equal to 81 times the next higher positive integer number. Find the number."
Thank you.

Click here to see answer by ikleyn(52777) About Me 

Question 1106018: The solubility equilibrium constant for the dissolution of copper (I) chloride into copper ions and chlorine ion is Ksp = [Cu+][Cl-].
If the solubility constant is Ksp = 1.7 × 10-7, and the concentration of chlorine (Cl-) is 0.2 mol/L greater that the concentration of copper (Cu+), what is the concentration of copper ions in solution?

Click here to see answer by josgarithmetic(39617) About Me 

Question 1106100: A rectangle has an area of 216cm^2. Find the dimensions if the length is 6cm longer than twice the width
Click here to see answer by Alan3354(69443) About Me 

Question 1106136: Antonio graphs these equations and finds that the lines intersect at a single point, (–5, 0.25).
Equation A:
Equation B: 4y – 3x = 16
–x – 8y = 3
Which statement is true about the values x = –5 and y = 0.25?

Click here to see answer by Boreal(15235) About Me 

Question 1106181: A picture measures 12cm by 20cm. We wish to add a border of equal width around the frame. The area of the border must equal the area of the picture. Determine the width of the border correct to one decimal place
Click here to see answer by ikleyn(52777) About Me 

Question 1106233: determine all possible values of k so that the quadratic below has one zero.
x^2 + (k-5)x + (4-5k) = 0
the asnwers are k = -1 and k = -9. thank you!

Click here to see answer by Boreal(15235) About Me 
Question 1106233: determine all possible values of k so that the quadratic below has one zero.
x^2 + (k-5)x + (4-5k) = 0
the asnwers are k = -1 and k = -9. thank you!

Click here to see answer by ikleyn(52777) About Me 

Question 1106268: How would I find the equation of a parabola whose vertex is (0,0) and two other points are (1,-2) and (-1,-2)?
Click here to see answer by josgarithmetic(39617) About Me 
Question 1106268: How would I find the equation of a parabola whose vertex is (0,0) and two other points are (1,-2) and (-1,-2)?
Click here to see answer by math_helper(2461) About Me 

Question 1106260: For what values of k will the equation y = x² + kx + k cross the x- axis twice?
Click here to see answer by josgarithmetic(39617) About Me 

Question 1106382: Determine the value(s) of x for which
(x^2+5x^5+6x^3)/(x^5-5x^4+6x^3)
is undefined

Click here to see answer by Alan3354(69443) About Me 

Question 1106418: For what value of m does [mx^2-3x+12=0] have no real roots?
Click here to see answer by Alan3354(69443) About Me 

Question 1106535: Which equation does NOT represent y as a quadratic function of x?
y + 3 = x(x + 4)
y – x = 2y + 16
(x – 3)(x + 6) = y
x(x + 7) = y

Click here to see answer by rfer(16322) About Me 

Question 1106560: Suppose that a is a positive number such that the roots of x² - ax + 1 differ exactly by 1. What is the value of a?
Click here to see answer by dkppathak(439) About Me 

Question 1106591: show me a graph of y=x^+x-2

Click here to see answer by Alan3354(69443) About Me 

Question 1106677: Fully factor P(x)= 2x^3 +9x^2-6x-5.
Click here to see answer by Alan3354(69443) About Me 

Question 1106791: The equation h= -16t^2 +32t+6 gives the height (h) in feet of a ball (t) seconds after being thrown with an initial velocity of 32 feet per second. Follow the instructions above to analyze the ball's motion. How far was the ball thrown?
Click here to see answer by ikleyn(52777) About Me 

Question 1106822: what is the maximum value of 8-2x-x^2
Click here to see answer by Alan3354(69443) About Me 

Question 1106864: A farmer decides to enclose a rectangular,using the side of a barn as one side as a rectangle What is the maximum area that the farmer can enclose with 40 feet of fence. What dimensions yields that maximum area
Click here to see answer by ikleyn(52777) About Me 

Question 1106793: An insurance company is using the formula y=0.009x^2 -0.90x+27 to predict the number of accidents per million driving miles (y) for drivers of different ages (x) between 16 and 70. At what age does the model predict the fewest accidents
Click here to see answer by ankor@dixie-net.com(22740) About Me 

Question 1107177: given (h+1) and (k-2) are the roots of the equation x power of 2 +9x +14=0. Find the values og h and k
Click here to see answer by math_helper(2461) About Me 

Question 1107194: Find the roots of 4n2+7n-3=0 correct to two decimal places
Click here to see answer by Fombitz(32388) About Me 
Question 1107194: Find the roots of 4n2+7n-3=0 correct to two decimal places
Click here to see answer by Boreal(15235) About Me 
Question 1107194: Find the roots of 4n2+7n-3=0 correct to two decimal places
Click here to see answer by stanbon(75887) About Me 

Question 1107262: A parabola contains the pints 0,0 1,2 and -1,6 What is the equation in standard form

Click here to see answer by Fombitz(32388) About Me 

Question 1107265: Given one of the roots of the equation 2x power of 2 + 1 = h-5x is four times to other root. Find the value oh h
Click here to see answer by josgarithmetic(39617) About Me 
Question 1107265: Given one of the roots of the equation 2x power of 2 + 1 = h-5x is four times to other root. Find the value oh h
Click here to see answer by ikleyn(52777) About Me 

Question 1107264: Given one of the roots of the equation 2 power of 2 + 1 = h-5x is four times to other root. Find the value oh h
Click here to see answer by ikleyn(52777) About Me 

Question 1107344: kipketer can cultivate a piece of land in 7hours while Wanjiku can do the same work in 5hours.Find the time they would take to cultivate the same piece of land when working together
Click here to see answer by ikleyn(52777) About Me 

Question 1107444: A museum curator needs to frame a rectangular painting. The painting is 24“ x 16“.
Question one. If the frame is to be of with width x, what is the function for the area of the painting, including the frame?
Question two. What would be the area of just the frame if the value of X was determined to be 2.5 inches

Click here to see answer by josgarithmetic(39617) About Me 

Question 1107748: If you spin the spinner 100 times, how many times do you expect it to stop on 8? The spinner is divided into 8 parts.
Click here to see answer by Boreal(15235) About Me 

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 17551..17595, 17596..17640, 17641..17685, 17686..17730, 17731..17775, 17776..17820, 17821..17865, 17866..17910, 17911..17955, 17956..18000, 18001..18045, 18046..18090, 18091..18135, 18136..18180, 18181..18225, 18226..18270, 18271..18315, 18316..18360, 18361..18405, 18406..18450, 18451..18495, 18496..18540, 18541..18585, 18586..18630, 18631..18675, 18676..18720, 18721..18765, 18766..18810, 18811..18855, 18856..18900, 18901..18945, 18946..18990, 18991..19035, 19036..19080, 19081..19125, 19126..19170, 19171..19215, 19216..19260, 19261..19305, 19306..19350, 19351..19395, 19396..19440, 19441..19485, 19486..19530, 19531..19575, 19576..19620, 19621..19665, 19666..19710, 19711..19755, 19756..19800, 19801..19845, 19846..19890, 19891..19935, 19936..19980, 19981..20025, 20026..20070, 20071..20115, 20116..20160, 20161..20205, 20206..20250, 20251..20295, 20296..20340, 20341..20385, 20386..20430, 20431..20475, 20476..20520, 20521..20565, 20566..20610, 20611..20655, 20656..20700, 20701..20745, 20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 27136..27180, 27181..27225, 27226..27270, 27271..27315, 27316..27360, 27361..27405, 27406..27450, 27451..27495, 27496..27540, 27541..27585, 27586..27630, 27631..27675, 27676..27720, 27721..27765, 27766..27810, 27811..27855, 27856..27900, 27901..27945, 27946..27990, 27991..28035, 28036..28080, 28081..28125, 28126..28170, 28171..28215, 28216..28260, 28261..28305, 28306..28350, 28351..28395, 28396..28440, 28441..28485, 28486..28530, 28531..28575, 28576..28620, 28621..28665, 28666..28710, 28711..28755, 28756..28800, 28801..28845, 28846..28890, 28891..28935, 28936..28980, 28981..29025, 29026..29070, 29071..29115, 29116..29160, 29161..29205, 29206..29250, 29251..29295, 29296..29340, 29341..29385, 29386..29430, 29431..29475, 29476..29520, 29521..29565, 29566..29610, 29611..29655, 29656..29700, 29701..29745, 29746..29790, 29791..29835, 29836..29880, 29881..29925, 29926..29970, 29971..30015, 30016..30060, 30061..30105, 30106..30150, 30151..30195, 30196..30240